This is so dumb, if you actually did the research you would know wadai is in Chad (central africa), why doesn't everybody lay off of Sudan and by the way no Nigerian group comes from Sudan. Humans reached Nigeria when leaving southern ethiopia and traveling through central africa. And whoever is telling them to go back to khartoum please stop, wadai is in Chad and if a big group of nigerians came to Sudan, they would be massacred and driven back to Sudan.